She described using the card - which is also in Mr Palmer's name - for the trips as "fairly automatic" and said she believed it was the "correct action" to take.

Under questioning by the special purpose liquidators' barrister Tom Sullivan QC, Ms Mole also said she hadn't made any further arrangements for Mr Palmer's sought-after nephew, or anyone to visit him, after March 27 this year.

Asked if she knew where he currently was, she replied: "No, I do not".

It came after the court heard about emails detailing plans for a Mediterranean cruise that Ms Mole said was to be attended by "a great many people" and that Mr Mensink appeared to be organising.

She said she wasn't sure if Mr Mensink was still working for the organisation at the time and didn't know why email correspondence from him ceased after March 27, but "probably made assumptions" about it given media reports about a warrant being issued in his name about that time.

Mr Mensink left Australia in June 2016 following the collapse of Queensland Nickel, and the Federal Court has issued two warrants for his arrest.

Liquidators want to question him because he was a director of the company, which failed with debts of $300 million and the loss of about 800 jobs.

Before she entered the witness box, Mr Palmer said on Tuesday he was not worried about his personal assistant's testimony.

"Not at all. It's just all rubbish, part of the political witch hunt, false information and fake news that the liquidators of the federal government continue to funnel to the media," the former federal MP told AAP.

Ms Mole did not comment to waiting media as she left the court precinct.